Board
About the Board
Board is an open source ESP32 PCB design by MrKohESP, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 29.1 × 53.4 mm, with 42 components from 23 distinct parts.
Its main chip is the ESP32-C3-FH4, from the ESP32 family. Other key parts include the USBLC6-2SC6 and AZ1117-3.3. By type, the board carries 19 capacitors, 7 resistors, 3 ICs, 3 diodes, 2 crystals and 2 connectors.
It belongs with the dev boards & breakouts and usb & debug tools designs in this gallery.
From the project
Mr. Koh ESP32-C3 RISC-V Development Board
Main components on the Board
Board bill of materials (BOM)
42 components, 23 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USBLC6-2SC6 | SOT-23-6 | U1 |
| 1 | ESP32-C3-FH4 | QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U2 |
| 1 | AZ1117-3.3 | SOT-223-3_TabPin2 | U3 |
| 1 | MMBT3904 | SOT-23 | Q1 |
| 1 | C32346 32K (C32346) | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | C252256 40Mhz (C252256) | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | header | PinHeader_1x16_P2.54mm_Vertical | J2 |
| 1 | Antenna_Dipole | Texas_SWRA117D_2.4GHz_Left | AE1 |
| 1 | C202388 RESET | SW_Push_SPST_NO_Alps_SKRK | SW1 |
| 1 | C202388 BOOT | SW_Push_SPST_NO_Alps_SKRK | SW2 |
| 1 | C2286 WHT | LED_0603_1608Metric | D1 |
| 1 | WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D2 |
| 1 | C2290 RED | LED_0603_1608Metric | D3 |
| 2 | 2N2 2n2 | L_0402_1005Metric | L1, L2 |
| 9 | 100N 100n | C_0402_1005Metric | C1, C2, C12, C13, C15, C16, C17, C18 +1 |
| 2 | 3P3 3p3 | C_0402_1005Metric | C3, C4 |
| 4 | 22P 22p | C_0402_1005Metric | C5, C6, C7, C8 |
| 3 | 10U 10u | C_0603_1608Metric | C9, C11, C14 |
| 1 | 22U 22u | C_0805_2012Metric | C10 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 5K1 | R_0402_1005Metric | R1, R2, R3, R5 |
| 2 | 1K5 | R_0402_1005Metric | R4, R6 |
| 1 | 5K1 | R_0402_1005Metric | R7 |
Board design files
The KiCad project lives in the MrKohESP/Board repository on GitHub; these links point at the commit this page was built from.
Board: common questions
What microcontroller does the Board use?
The Board is built around the ESP32-C3-FH4, from the ESP32 family.
How big is the Board?
The Board measures 29.1 × 53.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Board?
42 components, from 23 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Board design files?
From the MrKohESP/Board repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Board design in my own project?
Yes, under the terms of its GPL-3.0 license, which MrKohESP chose for the repository.
Can I test firmware for the Board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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